Asieg Tool SB-5 Tungsten Carbide Burr Rotary File Cylinder Shape Double Cut with 1/4''Shank for Die Grinder Drill Bit

I never knew how much I needed a carbide burr until i bought this one.Such a useful tool for shaping/sharpening steel!Has held up quite well so far. (Approximately 8-10 hours of use.)Throws quite a lot of metal shavings during use. I recommend putting a magnet inside a plastic bag to collect them, otherwise they get everywhere.

I know it sounds odd but this is not something that will last forever, while it last it gets the job done, at a very good price.Worth the money i paid

It did the job I wanted it to do

I used this product milling the heads off of 4 hardened 3/8" bolts. It was duller when I was done but it did the job and held up better than I expected. So happy with this purchase.

I used this to ream out a 7/8" to 1" Amazon adapter sleeve to be used with a HF lawn mower engine. The Amazon sleeve measures very close to the nominal 0.875 ID and 1.000 inch OD. Unfortunately, the original shaft on the Tecumseh engine measures about 0.980 inch, so the original drive pulley won't fit on the adapter sleeve when it is installed on the [new engine] shaft. I needed to remove about 20 thousandths inch of metal from the sleeve wall. I had already spent a few hours trying to enlarge the hole in the sleeve. Once I started grinding with the Rotary File it took about 20 minutes to get everything to fit right. I recommend this tool for quick and relatively accurate metal removal.